Facebook (s FB) unveiled a new look for its News Feed yesterday, and as Eliza Kern reports, it’s big on bigger photos. Facebook’s COO, Sheryl Sandberg, is making news of her own this week, kicking off a national discussion on women in the work place. Stacey Higginbotham and Laura Owen read the book and share their thoughts on the topic. And finally, Hadoop isn’t just a fun word to say, as Derrick Harris explains, it’s an open source tool you’ll be hearing a lot about in the coming years.